In-vehicle system

Abstract

An in-vehicle system is provided with a first in-vehicle unit having a first electric signal transfer part, a first substrate wiring, and a first connector; a second in-vehicle unit having a second electric signal transfer part, a second substrate wiring, a third substrate wiring, a second connector, and a third connector; a third in-vehicle unit having a third electric signal transfer part, a fourth substrate wiring, a fifth substrate wiring, and a fourth connector; a first insulated sheathed cable connecting the first connector and the second connector; and a second insulated sheathed cable connecting the third connector and the fourth connector. When the first insulated sheathed cable is connected, the first substrate wiring and the third substrate wiring become conductive. When the second insulated sheathed cable is connected, the second substrate wiring and the fifth substrate wiring become conductive, and the third substrate wiring and the fourth substrate become conductive.

What is claimed is: 
     
       1. An in-vehicle system, comprising:
 a first in-vehicle circuitry, having a first electric signal transfer part, a first substrate wiring, and a first connector, in which the first substrate wiring connects the first electric signal transfer part and the first connector, 
 a second in-vehicle circuitry, having a second electric signal transfer part, a second substrate wiring, a third substrate wiring, a second connector, and a third connector, in which the second substrate wiring connects the second electric signal transfer part and the third connector, and moreover, the third substrate wiring connects the second connector and the third connector, 
 a third in-vehicle circuitry, having a third electric signal transfer part, a fourth substrate wiring, a fifth substrate wiring, and a fourth connector, in which the fourth substrate wiring connects the third electric signal transfer part and the fourth connector, and moreover, the fifth substrate wiring connects the third electric signal transfer part and the fourth connector, 
 a first insulated sheathed cable, connecting the first connector and the second connector, and 
 a second insulated sheathed cable, connecting the third connector and the fourth connector, 
 wherein, when the first insulated sheathed cable is connected to the first connector and the second connector, the first substrate wiring and the third substrate wiring become conductive, and 
 when the second insulated sheathed cable is connected to the third connector and the fourth connector, the second substrate wiring and the fifth substrate wiring become conductive, and moreover, the third substrate wiring and the fourth substrate wiring become conductive. 
 
     
     
       2. The in-vehicle system according to  claim 1 ,
 wherein the first insulated sheathed cable has a first conductor film which covers a first twisted pair wiring, connecting the first substrate wiring and the third substrate wiring, and 
 the second insulated sheathed cable has a second conductor film which covers a second twisted pair wiring, connecting the third substrate wiring and the fourth substrate wiring, and a third twisted pair wiring, connecting the second substrate wiring and the fifth substrate wiring. 
 
     
     
       3. The in-vehicle system according to  claim 1 ,
 wherein the first in-vehicle circuitry has a first power supply part and a sixth substrate wiring, 
 the second in-vehicle circuitry has a second power supply part and a seventh substrate wiring, 
 the third in-vehicle circuitry has a third power supply part and an eighth substrate wiring, 
 the sixth substrate wiring connects the first power supply part and the first connector, 
 the seventh substrate wiring connects the second power supply part, the second connector, and the third connector, and 
 the eighth substrate wiring connects the third power supply part and the fourth connector. 
 
     
     
       4. The in-vehicle system according to  claim 3 ,
 wherein the first insulated sheathed cable has a first twisted pair wiring, connecting the first substrate wiring and the third substrate wiring, and a first pair wiring, connecting the sixth substrate wiring and the seventh substrate wiring, and 
 the second insulated sheathed cable has a second twisted pair wiring, connecting the third substrate wiring and the fourth substrate wiring, a third twisted pair wiring, connecting the second substrate wiring and the fifth substrate wiring, and a second pair wiring, connecting the seventh substrate wiring and the eighth substrate wiring. 
 
     
     
       5. The in-vehicle system according to  claim 4 ,
 wherein the first insulated sheathed cable has a first conductor film which covers the first twisted pair wiring and the first pair wiring, and 
 the second insulated sheathed cable has a second conductor film which covers the second twisted pair wiring, the third twisted pair wiring, and the second pair wiring. 
 
     
     
       6. The in-vehicle system according to  claim 1 ,
 wherein the first in-vehicle circuitry has a first sensor part connected with the first electric signal transfer part, 
 the second in-vehicle circuitry has a second sensor part connected with the second electric signal transfer part, and 
 the third in-vehicle circuitry has a processing part connected with the third electric signal transfer part. 
 
     
     
       7. The in-vehicle system according to  claim 1 ,
 wherein the first in-vehicle circuitry is arranged behind a front grille of a vehicle, 
 the second in-vehicle circuitry is arranged at one of side parts of a front bumper of the vehicle, and 
 the third in-vehicle circuitry is arranged in a car room of the vehicle.